When a bottle of scent is kept open in a corner of a room its odour is felt in all parts of the room. This is due to the phenomenon of
(A) evaporation
(B) vaporisation
(C) diffusion
(D) sublimation
Correct Answer : diffusion
Question Asked : SSC Combined Graduate Level Prelim Exam 2004
Explanation : Diffusion is one of several transport phenomena that occur in nature. A distinguishing feature of diffusion is that it results in mixing or mass transport without requiring bulk motion. It involves the movement of particles from region of their higher concentration to low concentration. This movement continues as long as there exist the pressure difference i.e. diffusion pressure deficit (DPD).
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